Fixed Basket - An inflation index that never swaps steak for chicken

Hi PH Official inflation stats do something most people don't realize: when a price rises, the basket changes. Steak gets expensive, the model assumes you switch to chicken, and the measured increase shrinks. That's defensible economics — it's also not the question most people are asking, which is "what does the life I actually had cost now?" So I built the stubborn version. The Fixed Basket prices one unchanging cart of 17 everyday categories — rent, groceries, gas, healthcare, tuition — every month since January 2000, and never substitutes anything for anything. Zero BLS CPI series. Not as a source, not as a bridge, not as a fallback. Every number traces to a primary publisher: BLS, EIA, Census, CMS, KFF, Zillow. Apparel is literally four physical goods — a pair of Levi's 501s, Chuck Taylors, Dr. Martens 1460s, Dickies 874s — priced from catalogs and archived retailer pages. The result: 3.55%/yr since 2000. A 2000 dollar buys about 41¢ of that cart today. What I'd actually like feedback on: the site publishes its own gaps. There's a coverage timeline showing exactly where each category's data starts and stops, a substitution log explaining every change ever made, and plain-language notes on the weak spots — the drug basket can't see medicines invented after 2000, medical prices use Medicare rates (a floor, not what private insurers pay), and rent is national-only. Nothing is interpolated to fill a hole. It's free, no account, and there's an open JSON API. Would genuinely rather hear where the methodology is wrong than that the design is nice.